ABSTRACT
ETHNOPHARMACOLOGICAL RELEVANCE: Dendrobium huoshanense C. Z. Tang et S. J. Cheng (DH) is a traditional medicinal herb with a long history of medicinal use. DH has been recorded as protecting the gastrointestinal function. Modern pharmacology research shows that DH regulates intestinal flora, intestinal mucosal immunity, gastrointestinal peristalsis and secretion of digestive juices. At the same time, some studies have shown that DH has a good therapeutic effect on ulcerative colitis, but its mechanism of action has not been fully elucidated. AIMS OF THIS STUDY: To investigate the mechanism and effect of Dendrobium huoshanense C. Z. Tang et S. J. Cheng (DH) in the treatment of ulcerative colitis (UC) by combining network pharmacology and in vivo experimental validation. METHODS: A network pharmacology approach was used to perform component screening, target prediction, PPI network interaction analysis, GO and KEGG enrichment analysis to initially predict the mechanism of DH treatment for UC. Then, the mechanism was validated with the UC mouse model induced by 3% DSS. RESULTS: Based on the network pharmacological analysis, a comprehensive of 101 active components were identified, with 19 of them potentially serving as the crucial elements in DH's effectiveness against UC treatment. Additionally, the study revealed 314 potential core therapeutic targets along with the top 5 key targets: SRC, STAT3, AKT1, HSP90AA1, and PIK3CA. In experiments conducted on live mice with UC, DH was found to decrease the levels of IL-6 and TNF-α in the blood, while increasing the levels of IL-10 and TGF-ß. This led to notable improvements in colon length, injury severity, and an up-regulation of SRC, STAT3, HSP90AA1, PIK3CA, p-AKT1 and PI3K/AKT signaling pathway expression in the colon tissue. CONCLUSIONS: In this study, the active components and main targets of DH for UC treatment were initially forecasted, and the potential mechanism was investigated through network pharmacology. These findings offer an experimental foundation for the clinical utilization of DH.
Subject(s)
Colitis, Ulcerative , Dendrobium , Drugs, Chinese Herbal , Animals , Mice , Colitis, Ulcerative/chemically induced , Colitis, Ulcerative/drug therapy , Network Pharmacology , Phosphatidylinositol 3-Kinases , Class I Phosphatidylinositol 3-Kinases , Drugs, Chinese Herbal/pharmacology , Drugs, Chinese Herbal/therapeutic use , Molecular Docking SimulationABSTRACT
Objective: To study the protective effect of Gastrodiae Rhizoma ultrafine powder with different particle sizes on focal cerebral ischemia-reperfusion injury in rats, in order to provide theoretical basis for the application of ultrafine powder technology in related products. Method: The SD rats were randomly divided into six groups, namely sham-operated group, ischemia-reperfusion group, Gastrodiae Rhizoma ultramicro-powder Ⅰ group(1.2 g·kg-1), Gastrodiae Rhizoma ultramicro-powder Ⅱ group(1.2 g·kg-1), Gastrodiae Rhizoma ultramicro-powder Ⅲ group(1.2 g·kg-1), and nimodipine positive drug group(12.6 g·kg-1). The cerebral ischemia-reperfusion model was established after 7 days of drug administration. The focal ischemia reperfusion injury model was prepared by middle cerebral artery occlusion (MCAO) for 1 h followed by reperfusion for 24 h. The infarct size of brain tissue was measured by triphenyltetrazolium Chloride(TTC) staining. The activities of superoxide dismutase (SOD), malondialdehyde (MDA) and nitricoxide synthase (NOS) in brain homogenate and serum were measured by colorimetry. The contents of glutamate(Glu), aspartic acid(Asp) and glycine(Gly) in hippocampus were determined by liquid chromatography-tandem mass spectrometry (LC/MSMS). Result:The model group showed obvious signs of neurobehavioral deficit (PPPPPConclusion:Gastrodiae Rhizoma ultramicro-powder with different particle sizes has a protective effect on cerebral ischemia-reperfusion injury, and the Gastrodiae Rhizoma ultramicro-powder Ⅲ group has a more obvious protective effect than the the Gastrodiae Rhizoma ultramicro-powder Ⅰ group. The results showed that the protective effect of Gastrodiae Rhizoma ultramicro-powder on middle cerebral artery ischemia-reperfusion in rats was related to its particle size.
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Objective To observe the bacteriostatic effect of single herbs, traditional complex prescription and ultra-micro powder of Qiweibaizhusan. Methods The inhibiting zone and MIC of single herb and compound of Qiweibaizhusan on Escherichia coli, Staphylococcus aureus, Eubacterium aerofaciens, Pseudomonas aeruginosa, Salmonella sp, Saccharomyces cerevisiaes and Candida glabrata were measured by filter paper method. Results The growth of the tested bacteria and yeast except Staphylococcus aureus and Salmonella sp were inhibited by ginseng. The antibacterial effect of licorice was the best, and only Pseudomonas aeruginosa’s growth was not inhibited by licorice. The growth of Staphylococcus aureus and Eubacterium aerofaciens were inhibited by Agastache rugosa. The growth of Escherichia coli, Staphylococcus aureus, Eubacterium aerofaciens and Pseudomonas aeruginosa were inhibited by Poria cocos. Only Eubacterium aerofaciens’s growth was inhibited by Radix aucklandiae and fried Atractylodes macrocephala. The growth of all the bacteria and yeast were not inhibited by Radix puerariae. The growth of Staphylococcus aureus, Eubacterium aerofaciens and Salmonella sp were inhibited by the traditional decoction and ultra-micro powder of complex prescription of Qiweibaizhusan, and all the MIC of ultra-micro powder were smaller than the traditional decoction. Conclusion The main antibacterial component of Qiweibaizhusan was ginseng and licorice. The inhibiting effect of ultra-micro powder on bacteria was better than traditional decoction of Qiweibaizhusan in vitro.
ABSTRACT
The ultramicro-powder dosage is a new type decoction pieces of Chinese medicine.Due to high cell-wall penetrating rate of vegetal cell and increasing of specific surface area,the development of ultramicro-powder dosage has great significance to increasing clinical effects and bioavailability of Chinese medicine.
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Objective:To establish a GC fingerprint analysis method for identification of volatile oil in ultramicro-powder of Houttuynia cordata from different habitats, then to control the quality sensitively.Methods: GC was used to analyze the volatile constituents of ultramicro-powder of Houttuynia cordata from 12 different habitats;SPDTM-1CapillaryColumn(30m?0.32mm?0.25?m),temperature programming and FID detector were applied.Results: The mutual mode of GC fingerprints was set up and the similar degrees to the volatile oil from of different habitats were compared.Conclusion:The GC fingerprints of volatile oil in ultramicro-powder can be used to identify the Houttuynia cordata from different habitats and evaluate its quality.
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Objective:To explore protective action of ultramicro-powder of Rhizoma Gastrodiae on nerves in the rat of Cerebral ischemia- reperfusion injury.Methods:The local ischemia-reperfusion injury at model was established by cerebral ischemia for 2 hours and reperfusion for 24 hours.HE staining,2,3,5-triphenytetrazolium(TTC)staining,immunohistochemical methods were respectively used to investigate pathological changes of brain slices,the size of cerebral infarction and nervous cell apoptotic relative proteins Bcl-2,Bax expression after treatment with ultramicro-powder of Rhizoma Gastrodiae.Results:(1)Ultramicro-powder of Rhizoma Gastrodiae could reduce the size of cerebral infarction.When the low,middle and high dose groups were compared with the ischemia group there were significant differences(P
